SHv4 Calculator vs Slacker Virtual Remote
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SHv4 Calculator
Calculate your vehicle's speedometer error and get setup instructions for a SpeedoHealer module. This free, ad-free tool helps correct inaccurate speed and odometer readings on most motorcycles and some cars. It offers troubleshooting information and is compatible with non-cable driven speedometers.
- Calculate speedometer error
- Generate SpeedoHealer v4 setup instructions
- Access troubleshooting information
- Ad-free experience
- Offline functionality
- Compatible with most motorcycles and cars
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Use this free application to calculate the speedometer error of your vehicle and generate setup instructions for your SpeedoHealer v4 module. You can also access troubleshooting information. After installation, it does not use internet connection, it's Ad-free. On most modern motorcycles, with factory speedometer error being as high as 10%, even a modest sprocket gearing change can have the speedometer off by 15%. The sprocket change will also cause higher odometer reading, creating a negative resale factor for no valid reason. The SpeedoHealer is an inexpensive, convenient and very simple way to fix your speedo and odo. Compatible with all motorcycles with non cable driven speedometer. Plug 'n go SH kits are available for selected Harley, Honda, Hyosung, Buell, Ducati, Kawasaki, KTM, Suzuki, Triumph and Yamaha motorcycles. The SpeedoHealer can also be installed on cars which have a 2- or 3-wire speed sensor. Please check out our website for other cool and useful products for your motorcycle.
Slacker Virtual Remote
Transform your smartphone into a remote display for a digital suspension tuner. View real-time measurements and control key functions like reset and auto-zero. This version offers core remote capabilities without saving settings.
- Smartphone as remote display
- Real-time measurements
- Control Auto Zero
- Control Reset button
- Bluetooth connectivity
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Slacker Virtual Remote allows you to use your smartphone as a remote display for the new Motool Slacker Digital Suspension Tuner V4 with Bluetooth®. Take real-time measurements, measurements and control Slacker with the Reset and Auto Zero buttons. This is a "light" version of the virtual remote in the Motool Service Assistant App, you can not save settings. For virtual remote with MTB Mode and to save bikes and settings, install Service Assistant.
Screenshots
Verdict
The clearest difference is review sentiment: Slacker Virtual Remote at 100% against SHv4 Calculator's 67%. SHv4 Calculator's advantage is rating (5.0 vs 4.8) and iOS requirement (12.0 vs 15.0). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SHv4 Calculator holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews complicate that: 67% of SHv4 Calculator's written reviews are positive against 100% of Slacker Virtual Remote's, so the app with the better star average is not the one people write more warmly about.
SHv4 Calculator ships an update every 3 months, Slacker Virtual Remote every 6 months. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.
| Parameter | SHv4 Calculator | Slacker Virtual Remote |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | 4.8 (4 ratings) |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 | 4 |
| Update frequency | Every 3 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | HealTech Electronics Ltd. | Motool Inc |
Customer experience
SHv4 Calculator
Slacker Virtual Remote
In-app purchases
SHv4 Calculator
No in-app purchases
Slacker Virtual Remote
No in-app purchases
Questions
Is SHv4 Calculator free?
Is Slacker Virtual Remote free?
Which has better reviews, SHv4 Calculator or Slacker Virtual Remote?
Do SHv4 Calculator or Slacker Virtual Remote have ads?
Which is updated more often, SHv4 Calculator or Slacker Virtual Remote?
Other comparisons
